package com.speoki.springboot.service;

import com.speoki.springboot.mapper.Course;

import java.util.List;
import java.util.Map;


public interface CourseService {
    public Integer insertCourse(Course course);
    public Course queryCourseById(Integer id);
List<Map<String,String>>GetStudentCourse();
    public List<Map<String,Object>> getavgCourse2();
    public List<Course> getAll();
}
